Improvement in stump-extractors



i stemtA dtml T; FAjY, or CA MDEN, -N'EW 'J ERsnY.

`Letters .Patent No. 95,011, dated Sqtember 21, 1869.V y

IMPROVBMENT IN S-TUMP-EXTRACTORS.

i The ScheduleA referred to in these Letten Patent and making part of the name.

To all whom 'it may; concern .-v

Y Be it known that I, T. W. FAY,`of Camden, in the county of Camden, andState of New Jersey, have invented a new and improved Stumm-Extractor; and I do hereby declare that the following is a full, clear,

and exact description thereof', whichpwjll enable others skilled in the art to inake and` use the same, reference being had to the accompanying drawings,- forming part of this specification, in which the drawing represents a side view, partly in section, of, my improved stump extractor.v Y

p This invention relates toa new stump-extractor, or stone and'log-lifter, of that class in which the power is applied to a screw-shaft by means of a nut. v

The invention consists in a new manner of supporting the nut to avoid friction, and in a novel manner o f fastening the supports to the main plate, and the shoes Avto the supports.

A A, in the drawing, are three or four legs, lmade b of wood or metal, and fastenedat their upper ends, by

means of' double eye-bolts, a a, to a. plate, B. The upper 'ends of the supports A are partly bevelled, as shown, to fit welLunder the plate B.

To the lower end of each support A is, by `means of double eye-bolts, c c,pivoted'a shoe, G. The lower ends of A are also partly bevelled, as shown, to'it against the shoes. The shoes are, by the eye-bolt connections, so secured that they will adjust themselves to the form and nature of the ground.

D is a screw-shaft, fitted` vertically through the plate B. n

Above the plate B islitted upon the screw a nut, E, whichsu'pports the screw. Uponthe lower end of the screw is fitted a nut or sleeve, F, which has hooks, c c, at the sides, to receive thedrawing-chains' G.

v The nut rests on balls, d (l, ,which are placed into a groove of the plate B.

The sides of the nut E have inclined mortses,'for

the reception of levers, H H, by which thel nut is` turned,

' By having the mortises inclined, the levers will be.

inthe same position to reach as low as required The legs are, by cross-chains, prevented from spreading too far.. The balls d, rolling under the nut, prevent much loss of power by friction. l Hav-ing thus described my invention,

-1 claim as new, and. desire to secure by Letters Patenttially as shown and described.

2. The combination with grappling-device and holder F, of a vertically-reciprocatn g and non-rotating screw D, and actuating, revolving nut E, all co-operating to lift the stump in a perpendicular line, and without rotation of the carrying-screw.

3. The combination of revolving nut E and recessed plate B of the friction-,balls d. d, freely moving around wthsad plate, `for the purpose of producing rolling instead of sliding friction, thereby greatly lessening the resistance to be overcome by the power applied.

4. The combination with the legs A, shoes c, and

fplate B, of double eye-'bolts afiixed thereto, for the purpose of forming an expanding frame, which will accommodate itself to any unevenness of ground, in the manner set forth. 4 l

T. W. FAY.

Witnesses Guns. WATSON, G. W; LAUGHmN. 

